The paper introduces the methods of getting signal from the faint signal and anti-jamming in noise, and the methods include pre process, gainprogrammedamplifier and filter.
A measurement amplifier circuit is designed, which consists of circuits of differential amplifier, a common-mode rejection, double-end and single-end conversions and programmedgainamplifier.
设计了一个测量放大器电路，它由差动放大电路、共模抑制电路、双端单端转换电路和程控增益放大电路组成。
3
The LTC6915 is a precision programmable gain instrumentation amplifier with rail - to - rail output. The gain can be programmed to 14 levels through a parallel or serial interface.